MindTech Pill Not Breath: Acetone levels in the breath under nutritional ketosis should not be high enough to cause a detectable scent. When you are in ketosis, your body can run off your body fat, which is an essentially limitless source of fuel. More Sustained Energy: 90-120 minutes after you eat carbohydrates, your body doesn't have readily available energy produced from the mitochondria in your cells, so you start crashing� or lowering your energy. Along with weight loss, health parameters associated with carrying excess weight have improved, such as insulin resistance, high blood pressure, and elevated cholesterol and triglycerides.